Installing a Permeable Paver Driveway

Ah Minnesota what a great place to live
and I want to keep it that way hi I’m Heidi Hyland with Heidi’s
lifestyle gardens and our company has long been advocates of eco-friendly
practices we all understand the importance of protecting the integrity
of our natural resources did you know that stormwater runoff is the number one
cause of pollution in our Lakes I live on Gleason Lake and is considered
an impaired lake by the state of Minnesota the runoff from my property
first flows into Gleason Lake then it goes into the Minnehaha Creek next the
water goes to the Mississippi River and finally it ends up in the Gulf of Mexico
this problem is larger than my backyard so check out my driveway unsightly I
know but this is what we were left with after construction and there are no best
management practices for storm water currently the rain simply comes off the
roof onto the driveway out into the street and then into the lake so what
are we going to do about it well we’ve decided to install a
permeable pavers system and I’m going to show you how it’s done
we live in the Minnehaha Creek Watershed District which is a local government
unit that helps manage natural resources with their ultimate goal of improving
water quality when the watershed district is first contacted by a
homeowner we first can help them look at what types of water quality projects
they can do on their lot by taking a look at the runoff that comes off the
impervious surfaces such as the driveway the roof and look at where that runoff
ultimately ends up so while does what can you tell me about Gleason Lake well
it was actually recently added to the impaired water bodies list it’s been
impaired for excess nutrients and a large cause of that is runoff coming
from the lots surrounding this lake but just as important is the runoff coming
off the front of you a lot because that runoff ends up in the storm sewer system
which also empties out into this lake so what are the things I should know before
I consider a permeable pavers driveway really the first thing you want to do is
look at the worth of doing the permeable pavement driveway so you’re going to
want to redirect as much of your impervious surface on
site coming from things like your patio from the roofline and downspouts you
want to redirect all of that to the permeable pavement driveway so you’re
capturing as much water as possible instead of just capturing the water
that’s falling directly onto your driveway with all this advice in hand I
contacted an excavator scheduled my landscape crew and took what I learned
and applied it to the project let’s get busy and start digging here at my home in Plymouth I worked
with the city’s water resource manager to understand what soil types I have
it’s a Type C hydrologic soil which means that it’s a sandy loam now that
drains more quickly than clay but not as quickly as a sandy soil it’s important
for you to partner with not only your local municipality but your watershed
district as well because they will help you understand how to engineer your
permeable pavers system based on your soil types so as you can see we’ve done
the excavation and we’ve created a three-tier system each tier varying in
depth from 21 to 36 inches and each one being sloped slightly backwards to hold
all of the water in each tier so the next step of this process is to use this
polyurethane construction adhesive to put this 45 mil liner in place we’re
going to make sure that we overextend all borders for double insurance that
the water doesn’t flow back into our foundation so the first rock that we put into our
excavated hole is about 12 inches deep it’s called a one and a half inch clear
rock clear rock means there’s no fines in it and that’s what makes it a
permeable paper system because in those voids of this larger rock the water
pools and then it can slowly infiltrate into our native soils after the sub base
layer is put in then we install 4 inches of this 3/4 inch clear rock it provides
stability for cars to drive on the entire sub base and base together gives
the paver system its stability and strength the 4 inch base layer serves as
a transition between the 1 and a 1/2 inch rock and the 3/8 inch rock the
edging the its stamped concrete like we’ve added or a row of pavers is a
critical part of the system as it holds the pavers in place without the proper
installation of edging the system can fail there are many different shapes and
colors of permeable pavers if you want to pick out a paver that goes with your
architecture and that you like we sweep this Rock in between the pavers it
allows the water to flow through as well as acts as a filter to trap any sediment
that may clog the system so check this out watch how quickly it disappears
so our permeable pavers driveway is done it’s not only beautiful but it’s also
functional I’ve done my part in creating a positive impact on our environment if
you’d like to increase your property value consider adopting some of these
water wise best management practices like we’ve done here some cities even
offer incentives for homeowners to lead a more eco-friendly lifestyle I’m Heidi
Hyland thanks for exploring

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